Abstract: A proppant delivery assembly receives and supports a plurality of containers having proppant stored therein. A cradle has a top surface which receives and supports the plurality of containers when positioned thereon. The cradle enables the plurality of containers to dispense the proppant stored therein. A proppant mover is positioned to underlie and extend along the top surface of the cradle aligned with the plurality of containers to receive proppant from the plurality of containers. The proppant mover carries proppant away from the plurality of containers. A chute is coupled to the cradle for receiving proppant from the proppant mover and directing the proppant to a blender hopper. A hood assembly is disposed at an end of the chute opposite the proppant mover for directing a vacuum air flow that removes a volume of air containing proppant dust particles directed from the chute.

Abstract: A safety system for an automated storage and picking system is described. The storage system includes load handling devices operating above a series of stacked containers located within a framework, the top of which includes tracks on which the load handling devices operate. The safety system includes a transmitter located in close proximity to the storage system and a receiver located on each of the load handling devices. The transmitter can continually transmit a signal that is detected by the receivers on the load handling devices. In the event of an emergency or a breach of the storage system, the transmission of the signal is cut. Once the receiver no longer receives the signal from the transmitter, power to each load handling device drive is cut to render the storage system safe.

Abstract: A safety system for an automated storage and picking system is described. The storage system includes load handling devices operating above a series of stacked containers located within a framework, the top of which includes tracks on which the load handling devices operate. The safety system includes a transmitter located in close proximity to the storage system and a receiver located on each of the load handling devices. The transmitter can continually transmit a signal that is detected by the receivers on the load handling devices. In the event of an emergency or a breach of the storage system, the transmission of the signal is cut. Once the receiver no longer receives the signal from the transmitter, power to each load handling device drive is cut to render the storage system safe.